The FMP-RS spectropyrometer unveiled by FAR Associates is designed for research and development applications. Besides temperature, it displays and stores the accuracy of the temperature measured, the emissivity and the thermal spectrum. It is unaffected by changing emissivity, environmental absorptions or emission, or noise. It uses modular optics and fiber optic cable and can be multiplexed to a variety of applications, retaining the calibration for each. Calibration, which is performed in one step, can be done in the field. The device includes a high-speed industrial computer with fast Ethernet networking. Spectral emissivity and absorption/emission can be graphed from stored data.